[1]}, [2]} consider a bottom-up merging method
for the multiscale MOSUM procedure:
Accepting all the estimators from the smallest bandwidth,
it proceeds to coarser scales and only accepts a change point estimator
if its detection interval does not contain any estimators that are already accepted.
A similar strategy, named the local segmentation, has also been considered in [3]},
which permits asymmetric bandwidths.
